The Dolphins are concerned that pass rusher Cameron Wake could regress heading into his third NFL season. Wake, who spent two years out of football after being cut by the Giants as a rookie in 2005, has lobbied to replace the modest four-year, $2.3 million deal he signed before he piled up 19.5 sacks in his first two seasons in Miami. "He could (regress) if he doesn't do what good players in our league do, which would be to take the next step to grow," Dolphins coach Tony Sparano said. "There's obviously things that Cam can improve on. Cam would be the first to tell you that."